JP2013099453A - Bamboo shoot cutting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bamboo shoot cutting tool which permits the core of a bamboo shoot to be easily and surely cut.SOLUTION: The bamboo shoot cutting tool includes wires 10 and 12 having hooks 14 and 14 at the ends thereof, a first crescent plate 22 having a crescent-shaped plate face, shafts 26 and 28 provided on both sides of the first crescent plate 22 so as to be detachably engaged with the hooks 14 and 14 of the wires 10 and 12, a support 40 fixed to a central part of the first crescent plate 22, and hole portions 22b and 22c formed close to the central part with respect to the shafts 26 and 28 on a plate surface of the first crescent plate 22 so as to pass the wires 10 and 12. To cut the bamboo shoot, the wire 10 is rewound around the side of the bamboo shoot, the wire 12 is rewound around the opposite side, and then a tensile force is applied to the wires 10 and 12.

Description

  The present invention relates to a bamboo shoot cutting tool applied to bamboo shoot core cutting.

  Conventionally, when there is a bamboo forest directly under the distribution line, if a bamboo shoot growing on the bamboo forest is left unattended, there is a risk that bamboo will contact the distribution line and adversely affect the distribution line. For this reason, while the bamboo shoots are soft, it is necessary to cut the upper part to shorten the length.

  In the conventional core cutting operation, when cutting the core, the bamboo is shaken and folded, or the bamboo is tilted and cut using a blade or a saw.

  Conventionally, there is a rope saw described in Patent Document 1 as a technique for cutting a branch at a high place. The rope saw includes two ropes, an arbitrarily-shaped flexible cutting tool provided in the middle part of the two ropes, a string connected to the end of one rope, and a weight attached to the tip of the string. Yes. Then, we can pick up the branches that cut the weights and the end of the ends with bamboo baskets or throw them up, pull the strings attached to the weights close together, and pull the ropes connected to the strings to freely shape the flexible cutting tool Pull up the branch you want to cut or the point you want to end. The branches are cut by alternately pulling the ropes with both hands.

Utility Model Registration No. 3116974

  However, when the rope saw of Patent Document 1 is used for core cutting of bamboo shoots that have grown to some extent, an arbitrary-shaped flexible cutting tool is positioned at a predetermined portion of the bamboo shoots, and the ropes are pulled alternately. As a result, the arbitrarily shaped flexible cutting tool comes off from the bamboo shoot. For this reason, the rope saw of patent document 1 cannot be used. In addition, cutting the bamboo shoot using a blade may injure the operator by mistake.

  Accordingly, there is a demand for the appearance of a bamboo shoot cutting tool that can easily and surely cut the center of a bamboo shoot without using a blade.

  An object of this invention is to provide the bamboo shoot cutting tool which can cut | disconnect the core cutting of a bamboo shoot easily and reliably.

  In order to achieve the above object, the present invention has the following configuration.

  (1) A bamboo shoot cutting tool for cutting bamboo shoots, the first wire and the second wire each having a hook at the end, the first crescent plate having a crescent-shaped plate surface, and the first A first engagement portion provided on one side of the crescent and removably engaged with a hook of the first wire; provided on the other side of the first crescent plate; A second engaging portion that is detachably engaged with a hook of the two wires, a column fixed to a central portion of the first crescent plate, and the first on the plate surface of the first crescent plate. A first hole formed closer to the center with respect to the engaging portion, and a second hole formed closer to the center with respect to the second engaging portion on the plate surface of the first crescent plate. A hook portion of the first wire is engaged with the first engagement portion, and the first wire is moved forward. Wrap around the side of the bamboo shoot and pass through the first hole, engage the hook of the second wire with the second engagement portion, and the second wire against the side of the bamboo shoot Then, it is rolled back to the opposite side and passed through the second hole, and tension is applied by pulling the first wire and the second wire passed through the first hole and the second hole. The bamboo shoot cutting tool characterized by cutting said bamboo shoot.

  According to (1), for example, an operator makes the first crescent plate face each other below the bamboo shoot, wraps the bamboo so that the first wire and the second wire intersect, and hooks the engaging portion. Engage with. Then, the worker lifts the support column so that the first crescent plate faces the predetermined portion of the bamboo shoot, and pulls the first wire and the second wire simultaneously. Thereby, tension is applied to the first wire and the second wire, and a predetermined portion of the bamboo stalk is narrowed down by the two wires and cut. Thus, the core cutting of the bamboo shoot can be easily and reliably cut, and the safety of the cutting operation is improved because no blade or the like is used.

  (2) The bamboo shoot cutting tool according to (1), wherein the support column includes a rotation unit that rotates the first crescent plate in a protruding direction in a crescent shape.

  According to (2), since it becomes possible to move a main-body part upwards, maintaining the state which made the bamboo oppose the recessed part of a 1st crescent board, the main-body part of the state which wound the wire smoothly It becomes possible to move to.

  (3) The bamboo shoot cutting tool according to (1) or (2), wherein a roller for guiding the wire is provided in the hole.

  According to (3), when the first and second wires are pulled, the roller rotates along with the movement of the first and second wires. Thereby, it is possible to reduce the first and second wires from being in sliding contact with the first crescent plate, and to prevent the first and second wires from being damaged.

  (4) In (1) to (3), each of the first engaging portion and the second engaging portion is formed of a rod-like member having one end fixed to the first crescent plate, The bamboo shoot cutting tool further comprising a second crescent plate disposed opposite to the crescent plate and fixed to the other end of the rod-shaped member.

  According to (4), since the first engaging portion and the second engaging portion are supported by the first crescent plate and the second crescent plate, the strength of the engaging portion increases, When the tension from the first and second wires is applied to the engaging portion and the second engaging portion, it is possible to prevent the first engaging portion and the second engaging portion from being damaged. .

  According to the present invention, it is possible to easily and surely cut the bamboo core, and the safety of the cutting operation is improved because a blade or the like is not used.

It is a perspective view which shows typically the principal part structure of the bamboo shoot cutting tool 1 in one Embodiment of this invention. It is a side view which shows typically the principal part structure of the bamboo shoot cutting tool 1 in one Embodiment of this invention. It is a figure which shows the connection structure of the main-body part 20 and the extension pillar 60. FIG. It is a perspective view which shows the state which removed the hook 14 in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view schematically showing a main part configuration of a bamboo shoot cutting tool 1 in one embodiment of the present invention, and FIG. 2 schematically shows a main part configuration of the bamboo shoot cutting tool 1 in one embodiment of the present invention. FIG. The bamboo shoot cutting tool 1 includes two wires 10 and 12, a main body 20, and an extension column 60.

  As shown in FIG. 1, the wires 10 and 12 are thin metal wires having a length (for example, 1 m) that can be wound around at least the periphery of the bamboo shoot. Here, the bamboo shoot refers to a relatively soft immature bamboo that has grown to some extent after it has grown from the ground and has grown to some extent before the leaves have grown. A hook 14 is fixed to one end of the wires 10 and 12, and a ring 16 is fixed to the other end.

  The main body 20 includes a first crescent plate 22, a second crescent plate 24, shafts 26 and 28 corresponding to the engaging portions, a roller 30, and a support column 40.

  The first crescent plate 22 is a metal plate having a crescent-shaped plate surface. A hole 22a into which the column 40 can be inserted is formed at the center of the plate surface of the first crescent plate 22, and holes 22b and 22c are formed in the vicinity of both sides of the hole 22a.

  The holes 22b and 22c are substantially square through holes through which the wires 10 and 12 pass. The sizes of the holes 22 b and 22 c are set smaller than the hooks 14 and 14 of the wires 10 and 12 and larger than the rings 16 and 16. Therefore, the hooks 14 and 14 do not pass through the holes 22b and 22c, but the rings 16 and 16 can pass through the holes 22b and 22c. In addition, rollers 30 are installed in the vicinity of the substantially square four sides inside the holes 22b and 22c.

  The second crescent plate 24 is a metal plate having a crescent-shaped plate surface and is disposed to face the first crescent plate 22.

  The shafts 26, 28 have one end fixed to both sides of the first crescent plate 22 and the other end fixed to both sides of the second crescent plate 24 to engage the hooks 14, 14. Here, the shaft 26 and the hole 22b and the shaft 28 and the hole 22c in the first crescent plate 22 are in a line-symmetrical position with respect to the bisector of the first crescent plate 22 passing through the hole 22c. The portions 22b and 22c are formed closer to the center with respect to the shafts 26 and 28.

  The roller 30 is installed in the vicinity of four sides of a substantially square inside the holes 22b and 22c, and guides the wires 10 and 12 passing through the holes 22b and 22c. Four rollers 30 are provided in each of the holes 22b and 22c, and the rotation axes of the rollers 30 are along substantially four sides of a square. The wires 10 and 12 are inserted into the holes 22b and 22c, and the four rollers 30 rotate when the moving wires 10 and 12 come into contact with each other.

  As shown in FIG. 2A, the support column 40 includes a first support column portion 42, a bearing portion 44, a second support column portion 46, and a cylindrical body 48. The first support post 42 supports the first crescent moon 22 and the second crescent moon 24. Specifically, the first support column 42 is inserted into the hole 22a of the first crescent plate 22, and the support column 40 and the first crescent plate 22 are fixed by welding, for example. Next, the second crescent plate 24 is fixed to the end of the first support post 42 by welding or screwing. The other end portion of the first support post portion 42 is connected to the bearing portion 44. In FIG. 1, in order to illustrate the back of the first support column 42, the first support column 42 is partially omitted.

  The bearing unit 44 rotatably connects the first column unit 42 and the second column unit 46. Here, as shown in FIG. 2 (A), the first support column 42 is in a straight line together with the second support column 46, as shown in FIG. 2 (B). It can be rotated until it is in a state inclined 45 degrees with respect to the angle. The bearing 44 is provided with a torsion spring (not shown). When the first support column 42 is rotated by the torsion spring, the first support column 42 is urged so as to return to a state in which the second support column 46 is in a straight line. In the present embodiment, the crescent shape protrudes from the first crescent plate 22 and the second crescent plate 24 from the state where the first support column 42 and the second support column 46 are in a straight line (FIG. 2). (A) Turns in the middle A direction). Further, the cylindrical body 48 is connected to the end portion of the second support column portion 46.

  FIG. 3 is a perspective view showing a connection structure between the cylindrical body 48 and the extension column 60. The cylindrical body 48 is formed with an L-shaped slit 50 that is notched along a central axis direction of the cylindrical body 48 from a part of the opening edge portion and is further cut out along the circumferential direction of the cylindrical body 48. ing. A circular hole 52 having a diameter slightly larger than the width of the slit 50 is formed at the tip of the L-shaped slit 50.

  The extension column 60 is a long columnar member and has a diameter that can be inserted into the cylindrical body 48. A bolt 62 is attached to the tip of the extension column 60 in a direction perpendicular to the axial direction of the extension column 60, and a nut 64 is screwed into the tip of the bolt 62. The thickness of the bolt 62 is smaller than the width of the slit 50, and the outer diameter of the nut 64 is set larger than the diameter of the circular hole 52. Then, the bolt 62 is positioned in the circular hole 52 by causing the bolt 62 of the extension column 60 to face the slit 50, inserting the extension column 60 into the cylindrical body 48, and rotating the extension column 60. Then, the extension column 60 is connected to the main body 20 by tightening the nut 64.

  Next, attachment of the wires 10 and 12 to the main body 20 will be described with reference to FIG. When attaching the wire 10, the ring 16 is passed between the first crescent plate 22 and the second crescent plate 24, and the ring 16 is further pulled out through the hole 22 b. Similarly, when attaching the wire 12 to the main body portion 20, the ring 16 is passed between the first crescent plate 22 and the second crescent plate 24, and the ring 16 is further pulled out through the hole portion 22c. In a normal state, the hook 14 may be engaged with the shafts 26 and 28, or may be engaged with the edges of the holes 22b and 22c as shown in FIG.

  Next, the usage method of the bamboo shoot cutting tool 1 of this embodiment is demonstrated. First, the extension column 60 is connected to the main body 20, and further, as shown in FIG. 4, a connecting tool 72 is connected to the rings 16, 16 at the other end of the wires 10, 12, and a single wire 70 is connected. Keep connected.

  Next, as shown in FIG. 1, the concave sides of the first crescent plate 22 and the second crescent plate 24 are made to face the bamboo. Next, the wire 10 is wound back to one side surface (for example, the right side surface) of the bamboo, and the hook 14 is engaged with the shaft 26. Similarly, the wire 12 is wound around the other side surface portion (for example, the left side surface) of the bamboo, and the hook 14 is engaged with the shaft 26. Then, the worker holds the extension column 60 and moves the main body 20 upward while bringing the concave sides of the first crescent plate 22 and the second crescent plate 24 into contact with the bamboo.

  After positioning the main body portion 20 at a predetermined portion of the bamboo shoot, an operator pulls the wire 70, whereby tension is applied to the wires 10 and 12, and the winding portion of the wire 10 tends to move toward the shaft 26 side. Further, the portion of the wire 12 wound around the bamboo shoot tends to move toward the shaft 28 side.

  And if tension | tensile_strength is applied to the wires 10 and 12, the wires 10 and 12 will bite into a bamboo shoot and will cross. At this time, since the movement amounts of the wires 10 and 12 are the same, the wires 10 and 12 cross the bamboo shoot equally from the left and right sides. Then, the bamboo shoots are cut by the wires 10 and 12 completely traversing the bamboo shoots.

  As described above, according to the present embodiment, it is possible to easily and reliably cut the bamboo core, and the safety of the cutting operation is improved because a blade or the like is not used.

  Moreover, according to this embodiment, the support | pillar 40 has the bearing part 44, and rotates in the direction which protrudes in the crescent shape of the 1st crescent board 22 and the 2nd crescent board 24. Thereby, since it becomes possible to move the main-body part 20 upward, maintaining the state made, it becomes possible to move the main-body part 20 of the state which wound the wires 10 and 12 smoothly. In addition, since the bamboo is opposed to the concave portions of the first crescent plate 22 and the second crescent plate 24, when the main body portion 20 is moved upward, the bamboo is moved along the concave portion by the first crescent plate 22 and the second crescent plate 24. Move to the center of the. Thereby, it can prevent that a bamboo remove | deviates from the main-body part 20. FIG.

  Further, according to the present embodiment, by providing the rollers 30 for guiding the wires 10 and 12 in the holes 22b and 22c, when the wires 10 and 12 are pulled, the rollers are moved along the movement of the wires 10 and 12. 30 rotates. Thereby, it is possible to reduce the sliding contact between the wires 10 and 12 and the first crescent plate 22 and to prevent the wires 10 and 12 from being damaged.

  Further, according to the present embodiment, since the shafts 26 and 28 are supported by the first crescent plate 22 and the second crescent plate 24, the strength of the shafts 26 and 28 is increased, and the shafts 26 and 28 are connected to the wires 10 and 12 from each other. It is possible to prevent the shafts 26 and 28 from being damaged when the tension is applied.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, two plates of the first crescent plate 22 and the second crescent plate 24 are used, but the shafts 26 and 28 have a strength that does not buckle due to the tension applied to the wires 10 and 12. If so, the shafts 26 and 28 may be supported only by the first crescent plate 22. In the above-described embodiment, the hooks 14 are engaged with the shafts 26 and 28, but the shafts 26 and 28 may not be used as long as the hooks 14 are engaged. For example, a part of both ends of the first crescent plate 22 may be cut and raised in a hook shape, and the shafts 26 and 28 may be engaged with the hook-shaped portion.

  In addition, the crescent shape of the first crescent plate 22 and the second crescent plate 24 may be, for example, a shape in which one long side of a rectangle is curved inward, or a U-shape. Is also included.

DESCRIPTION OF SYMBOLS 1 Bamboo cutting tool 10 Wire 12 Wire 14 Hook 16 Ring 20 Main part 22 First crescent plate 22a, 22b, 22c Hole 24 Second crescent 26, 28 Shaft 30 Roller 40 Strut 42 First strut 44 Bearing 46 2 struts 48 cylindrical body 50 slit 52 circular hole 60 extension pillar 62 bolt 64 nut 70 wire 72 connector

Claims (4)

A bamboo shoot cutting tool for cutting bamboo shoots,
A first wire and a second wire each having a hook at the end;
A first crescent plate having a crescent-shaped plate surface;
A first engagement portion provided on one side of the first crescent plate and detachably engaged with a hook of the first wire;
A second engagement portion provided on the other side of the first crescent plate and detachably engaged with a hook of the second wire;
A post fixed to a central portion of the first crescent board;
A first hole formed closer to the center with respect to the first engagement portion on the plate surface of the first crescent plate;
A second hole formed closer to the center with respect to the second engagement portion on the plate surface of the first crescent plate,
The hook of the first wire is engaged with the first engaging portion, the first wire is wound around the side of the bamboo shoot and passed through the first hole, and the hook of the second wire Is engaged with the second engaging portion, the second wire is wound back to the side portion opposite to the side portion of the bamboo shoot and passed through the second hole portion, and the first hole is passed through. A bamboo shoot cutting tool for cutting the bamboo shoot by pulling the first wire and the second wire passed through the portion and the second hole to apply tension.   2. The bamboo shoot cutting tool according to claim 1, wherein the support column includes a rotation unit that rotates the first crescent plate in a protruding direction in a crescent shape.   The bamboo shoot cutting tool according to claim 1 or 2, wherein a roller for guiding the first wire and the second wire is provided in the first hole and the second hole. The first engaging portion and the second engaging portion are each composed of a rod-shaped member having one end fixed to the first crescent plate,
The bamboo shoot cutting tool according to any one of claims 1 to 3, further comprising a second crescent plate disposed opposite to the first crescent plate and fixed to the other end of the rod-shaped member. .

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